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Table 9 Piers-Harris 2 Self-concept Scale outcomesa in GRIT program completers (n = 24)

From: Multidisciplinary lifestyle intervention in children and adolescents - results of the project GRIT (Growth, Resilience, Insights, Thrive) pilot study

ScaleBaseline12-weeksb 
Mean ± SD or Median (IQR)cp-value
Total score48.2 ± 9.451.0 ± 10.80.02*
Behavioural adjustment54.0 (46.8–62.0)54.0 (49.0–62.0)0.30
Intellectual and school status51.0 (48.0–54.0)51.0 (46.0–54.0)0.39
Physical appearance and attributes42.0 (40.0–50.3)48.0 (40.5–54.3)0.02*
Freedom from anxiety47.0 (37.0–54.0)52.5 (37.0–58.0)0.08
Popularity47.0 ± 10.447.3 ± 9.80.62
Happiness and satisfaction45.0 (40.0–51.0)49.0 (40.0–59.0)0.10
Response bias49.2 ± 10.549.8 ± 9.60.85
Inconsistent responding53.0 (43.0–53.0)43.0 (43.0–53.0)0.29
  1. aA higher score represents better self-concept
  2. bBaseline data carried forward for four participants who failed to complete 12-week assessment
  3. cNon-parametric data
  4. *Significant difference between baseline and follow-up, p < 0.05